Shaft coupling



April 28, 1931.

A. F. FRiDLJSSARD SHAFT COUPLING Filed Dec. 19. 1929 Fig.1.

Inventor ussard A ty. W)

A.F.F

Patented Apr. 28, 1931 v i H v UNITED STATES PATENT oFFicE ALBERT F. FROUSSAR-D, OF ST. LOUIS, MISSOURI SHAFT COUPLING Application filed December 19, 1929. Serial No. 415,182.

My invention relates to a shaft coupling of to the hub 6. The bore in the opposite end of the pin and disk type for coupling sections of the shell is enlarged so as to provide a space shafting which may be either slightly out of 17 around the disk at the end to allow for the line or slightly eccentric or both. One object necessary relative movement between the of my invention is to produce a simple and disks, and a removable flange 18 is provided 55 strong coupling having a smooth exterion at this end of the device, preferably having free from projection of any kind. Another a driving lit with a further enlargement of object of my invention is to so construct the the bore. When it' is desired to electrically coupling that it may be utilized to electriinsulate the sections of the shaft the shell is 19 cally insulate one section of the shaft from made of fiber, or other insulating material, 60

another. I and a thin disk 19 also of insulating mate- In the accompanying drawings, which rialis positioned between the disks 5. illustrate one form of coupling made in ac- Having fully described my invention, what cordance with my invention, Figure 1 is a Iclaim as new and desire to secure by Letters central longitudinal section; Figure 2 is an Patent of the United States is: 65 end View, partly in section and partly in ele- 1. In a device of the class described, the vation; and Figure 3 is a side elevation on a combination with a pair of disks, of lneans reduced scale. for securing said disks to the sections of shaft The coupling comprises two similar disks to be coupled, said disks being provided with 5, each provided with a hub 6 and having a aligning pin openings, connecting pins in 7 central opening 7 for the reception of one end said openings, a flange on each of said disks of a section of shaft 8. The disks are rigextending laterally therefrom at a point heidly secured to the shafts in any suitable manyond the pin openings and overhanging the ner, as for example, by means of set screws 9 ends of the pins in said openings, and spring in the hubs (5. Each disk is formed of a cenrings engaging the inner faces of said flanges tral portion and a laterally projecting flange to limit the longitudinal movement of said 10. Formed in the central part of each disk pins.

- is a series of equidistantly spaced holes 11. 2. In a device of the class described, the

The two disks are connected, after the holes combination with a pair of disks. of means 11 have been brought into alignment, by pins for securing said disks to the sections of shaft 12. These pins, which are preferably tubuto be coupled. said disks being provided with lar in form, are made of fiber or other nonaligning pin openings, insulating connectingmetallic material for the double purpose of pins in said openings, an insulating shell suravoiding electrical connection between the rounding said disks and secured to one but 35 disks and preventing noisy operation which spaced from the other, a pair of radial flanges would result from the use of metallic pins, carried by said shell. one of said flanges beowing to the play necessary between the pins in; removable, and an insulating disk situatjand holes to provide the desired flexibility. ed between said first named disks.

The pins terminate in recesses formed by the In testimony whereof. I hereunto affix my i overhang of the flanges l0 and have this lonsignature, this 17th day of December. 1929. gitudinal movement limited by split retain- ALBERT I. FRUISSARD.

ing rings 13 formed of resilient material and sprung into annular grooves 14 in the inner faces of the flanges 10.

Surrounding the two disks is a cylindrical shell or casing 15, one end of which is secured to one of the disks, preferably by having its bore of such size as to form a forced fit therewith. This end of the shell is provided with an integral radial flange 16 extending nearly 

